高等学校化学学报 ›› 1999, Vol. 20 ›› Issue (3): 470.

• 论文 • 上一篇    下一篇

聚(1,3-二氧环庚烷)二醇类聚氨酯的相态结构--软段链结构对聚氨酯相态结构的影响

刘业, 杨波, 周显志, 潘才元   

  1. 中国科学技术大学高分子科学与工程系, 合肥 230026
  • 收稿日期:1998-04-14 出版日期:1999-03-24 发布日期:1999-03-24
  • 通讯作者: 潘才元
  • 作者简介:刘业,男,32岁,博士,讲师.
  • 基金资助:

    国家自然科学基金(批准号:5977300)资助课题

Studies on Phase Structure of Polyurethanes Prepared from Poly(1,3-dioxepane) Diols --Effect of Chemical Structure of Soft Segment on Phase Structure of Polyurethanes

LIU Ye, YANG Bo, ZHOU Xian-Zhi, PAN Cai-Yuan   

  1. Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, 230026
  • Received:1998-04-14 Online:1999-03-24 Published:1999-03-24

摘要: 用FTIR和DSC对聚(1,3-二氧环庚烷)二醇为软段的聚氨酯的相态结构进行了分析.结果表明:与聚四氢呋喃二元醇类聚氨酯相比,主链中引入甲氧基后,软段相的结晶能力和硬段相中有序区的均匀程度下降.探讨了软段链结构对聚氨酯相态结构的影响.

关键词: 聚(1, 3-二氧环庚烷)二醇, 聚氨酯, 相态结构

Abstract: Polyurethanes were prepared using poly(1,3-dioxepane)diols(polyDOP) and poly(tetrahydrofuran)diols(polyTHF) as soft segment. The phase structures of these polyurethanes were analyzed by means of FTIR and DSC methods. The introduction of oxymethyl groups into the main chain of poly(THF) resulted in lower crystallization abilities of soft segment phase and heterogeneity of order region in hard segment phase. The effects of the chemical structure of soft segment on the crystallization of soft segment phase and order region in hard segment phase were discussed.

Key words: Poly, (1,3-dioxepane) diols, Polyurethanes, Phase structure

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